Bluetooth FM Transmitter Wireless Digital Radio In-car Transmitter Receiver Car Adapter MP3 Player Supports TF/SD Card a

Bluetooth FM Transmitter: with stable FM signal, anti-jamming design, can enhanced sound experience and noise suppression (CVC) technology, offer your hands-free talking and wonderful music.
Wider Ranger: Full FM radio frequency range from 87.5 to 108.0MHz is wider than what ordinary transmitters are of (88.1~107.9 MHz), which means you will get a frequency without interference more easily and do not have to keep re-tuning it.
Hand Free Call - Built-in microphone to automatically switch from music playing to hands-free mode when answering a phone call. With just one click, you can hang up while answering a call.
LED Display and Dual USB Charger: Detects and displays the voltage of the car battery on power-up. Dual USB ports supporting dual output 3.4A charge both devices at the same time. The built-in smart charging IC automatically detects your device and charges at the optimum speed (Note: the USB port music icon works as a charger and a flash drive).
USB Flash Player: Insert a USB flash drive containing MP3 files into the RIGHT USB port and then automatically send and play MP3 files (up to 32GB). Warranty: 60 day refund and 12 months without warranty.